<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Deep Nesting Test Page</title>
  </head>
  <body>
    <div>
      <div>
        <div>
          <div>
            <button>Deep button</button>
          </div>
        </div>
      </div>
    </div>
  </body>
</html>
